1)
In Pasuk 5, Yisrael spoke against "Elokim", why did they now declare "Ki Dibarnu ba'Hashem"?
1.
Oznayim la'Torah: Because whereas before they focussed on what they considered the harmful element of the Manna, they now realized that even that element stemmed from the f Hashem's Midas Rachamim. 1
1
Refer to 21:15:2:1**.
2)
?Va'yispalel Moshe be?Ad ha?Am?. What can we learn from Moshe's reaction?
1.
Rashi: We can learn that, when someone asks for forgiveness, one should banish all feelings of resentment and pardon him (immediately).